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Mental abilities and performance efficacy under a simulated 480-m helium-oxygen saturation diving.

Hou G, Zhang Y, Zhao N, Chen R, Xiao W, Yu H, Wang J, Yuan TF - Front Psychol (2015)

Bottom Line: Stress in extreme environment severely disrupts human physiology and mental abilities.The present study investigated the cognition and performance efficacy of four divers during a simulated 480 meters helium-oxygen saturation diving.We conclude that the human cognition and performance efficacy are significantly affected during deep water saturation diving.

View Article: PubMed Central - PubMed

Affiliation: Institute of Cognitive Neuroscience and Department of Psychology, Zhejiang Sci-Tech University Hangzhou, China.

ABSTRACT
Stress in extreme environment severely disrupts human physiology and mental abilities. The present study investigated the cognition and performance efficacy of four divers during a simulated 480 meters helium-oxygen saturation diving. We analyzed the spatial memory, 2D/3D mental rotation functioning, grip strength, and hand-eye coordination ability in four divers during the 0-480 m compression and decompression processes of the simulated diving. The results showed that except for its mild decrease on grip strength, the high atmosphere pressure condition significantly impaired the hand-eye coordination (especially above 300 m), the reaction time and correct rate of mental rotation, as well as the spatial memory (especially as 410 m), showing high individual variability. We conclude that the human cognition and performance efficacy are significantly affected during deep water saturation diving.

No MeSH data available.


The results from spatial memory. (A) Four divers, (B) Average.
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Figure 4: The results from spatial memory. (A) Four divers, (B) Average.

Mentions: The spatial memory ability (Figures 4A,B) of the four divers exhibited large variability across individuals. The performance of diver A appears to be stable compared to baseline, except 350–480 m in compression and stay phase ranging from 82.4%∼96.0%. Greater impairment was observed on diver B and C, which decreased as compression processed until 480 m (59.1% for diver B and 76.0% for diver C, compared to baseline). While, the worst performance for diver D was at the depth of 410 m in compression (72.0% compared to baseline).


Mental abilities and performance efficacy under a simulated 480-m helium-oxygen saturation diving.

Hou G, Zhang Y, Zhao N, Chen R, Xiao W, Yu H, Wang J, Yuan TF - Front Psychol (2015)

The results from spatial memory. (A) Four divers, (B) Average.
© Copyright Policy
Related In: Results  -  Collection

License
Show All Figures
getmorefigures.php?uid=PMC4496554&req=5

Figure 4: The results from spatial memory. (A) Four divers, (B) Average.
Mentions: The spatial memory ability (Figures 4A,B) of the four divers exhibited large variability across individuals. The performance of diver A appears to be stable compared to baseline, except 350–480 m in compression and stay phase ranging from 82.4%∼96.0%. Greater impairment was observed on diver B and C, which decreased as compression processed until 480 m (59.1% for diver B and 76.0% for diver C, compared to baseline). While, the worst performance for diver D was at the depth of 410 m in compression (72.0% compared to baseline).

Bottom Line: Stress in extreme environment severely disrupts human physiology and mental abilities.The present study investigated the cognition and performance efficacy of four divers during a simulated 480 meters helium-oxygen saturation diving.We conclude that the human cognition and performance efficacy are significantly affected during deep water saturation diving.

View Article: PubMed Central - PubMed

Affiliation: Institute of Cognitive Neuroscience and Department of Psychology, Zhejiang Sci-Tech University Hangzhou, China.

ABSTRACT
Stress in extreme environment severely disrupts human physiology and mental abilities. The present study investigated the cognition and performance efficacy of four divers during a simulated 480 meters helium-oxygen saturation diving. We analyzed the spatial memory, 2D/3D mental rotation functioning, grip strength, and hand-eye coordination ability in four divers during the 0-480 m compression and decompression processes of the simulated diving. The results showed that except for its mild decrease on grip strength, the high atmosphere pressure condition significantly impaired the hand-eye coordination (especially above 300 m), the reaction time and correct rate of mental rotation, as well as the spatial memory (especially as 410 m), showing high individual variability. We conclude that the human cognition and performance efficacy are significantly affected during deep water saturation diving.

No MeSH data available.